Selector system for telegraph type-writers.



E. E. KLEINSCHMIDT.

SELECTOR SYSTEM FOR TELEGRAPH TYPE WRITERS.

APPLICATION FILED APR. ll. I916. u

Patented Mar. 0, 1918.

2 SHEETSSHEET I.

CARR RU.

MAGNET 9 SPACE MAGNET E. E. KLEINSCHMIDT.

SELECTOR SYSTEM FOR TELEGRAPH TYPE WRITERS.

APPLICATION FILED APR. ll. I916.

1,258,019. Patented Mar. 5, 1918.

2 SHEETS-SHEET 2.

I I'I'T'T T I I TI UNITED STATES PATENT OFFICE EDWARD E. KLEIN SCHMIDT, 0F NMMMI TO KLEINSCHMIDT ELECTRIC COMIANY, INQ, OF BRQOKLYN, NEW

a 09320- BATION or NEW YORK.

SELECTOR SYSTEM FOR TELEGRAPH TYPE-WRITERS.

s eciacaaoll of Letters ream. p t nt 5, 19 3 Application filed April 17, 1916. Serial No. 91,814.

N. Y., assrcnonry MESNE assmmcmgrrs,

To all 'u'hom it may concern:

Be it known that I, EDWARD E. KLEIN soinno'r, a citizen of the United States, residing at New York city, borough of Manhattan, county of New York, and State of New York, have invented certain new and useful Improvements in Selector Systems for Telegraph Type-Writers, of which the following is a specification.

My invention relates to selector systems for telegraph-typewriters and more particularly to one in which is employed a plurality of independently operable selectors, and in which the character to be printed is selected by an impulse or impulses of predetermined duration varying according to the location of the character, the impulse or ime pulses varying in length for each character on the typewriter. My invention also contemplates the employment of means to effect a shift from one selector to another during the interval between the impulses, if more than one impulse is required for the selection of the character, so that upon the coming in of the second impulse the selector to which the shift has been made will be operated.

The principle of my invention may be applied in various ways, as for example, the rotation of a type-wheel or segment having thereon the characters to be printed. In the accompanying drawings I have shown two systems embodying the principle of my mvention in one of which the characters to be printed are arranged in horizontal and vertical rows on a segment, the rotation of which is controlled by one selector, and movement longitudinally by another. In the other drawing I have illustrated an adaptation of my invention to a system in which the charactors are arranged on the periphery of the wheel, the rotation of which is controlled by the selectors. In these drawings Figure 1 illustrates diagrammatically the essential parts of an apparatus in which the characters to be printed are arranged upon a segment; Fig. 2 a diagrammatic drawing of an apparatus in which the characters to be printed are arranged in a single row upon the periphery of a wheel; and Fig. 3 an enlarged view of the selector ratchet wheel of the system of Fig. 2.

Referring to Fig. 1, the numeral 1 designates the line circuit from a 'Wheatstone transmitter shown at the lower part of the figure, although any other suitable means may be employed to transmit the impulses to operate the apparatus. This transmitter is of standard construction and comprises a constantly rotating sprocket 2 which engages the center row of perforations a to feed the tape 3, these perforations being spaced apart a uniform distance; in the standard tape this is one-tenth of an inch. The transmltare alternate raised and lowered to effect the closing and opening of the contacts 5 and 6, as is well known in the operation of such transmitter. The impulses over the line circuit are received by thepolarized rela 7, the armature of which is adapted to c ose either of the contacts 8 or 9 according as to whether the impulse is positive or negative.

10 designates the platen in front of which the paper-strip 10' is passed. The surface shown is in the form of a segment 11 having the letters, and other characters on the face thereof, arranged in horizontal and vertical rows. In the machine designed by me there are eight characters in each horizontal row and six in each vertical row. The type-segment is fast on a two-part shaft supported in suitable bearings 12. The lower part 13 of the shaft has its upper end formed with a socket 13 adapted to receive the enlarged lower end of the upper part 14 of the shaft. The two parts of the shaft are held in engagement with each other by a spring 15 which not only acts downwardly upon the part 14 of the shaft but also tends to rotate the latter to hold a pin 14' thereon in engagement with a pin 13' projecting from a collar on the socket 13'. The purpose of this construction is to keep the two parts of the shaft in proper relation with each other, and to permit a slight forward movement of the segment 11 to print a selected character after the segment has been positioned, also to permit the selection of another character during the printing of the immediately preced- {Hg selected character, as will he explained ater.

When the type-segment shaft is at rest it is held against either rotation or vertical movement by the stops 16 and 1 The required movements are given t rough the following mechanism: 17 designates a continuously rotating shaft operated from the ter also comprises the usual pins 4 which shaftthrough an arm x -shaft the shaft. A spring 24 motor 17' through gears 17. Through a suitable train of gears 18 and 18' the shaft 17 imparts continuous motion to a shaft 19 which latter has fast on it a pinion 20. Pinion 20 is adapted to im art motion to a toothed segment 21 when t e latter is moved into engagement with the pinion, the extent of rotation of said segment depending upon the duration of the impulse. egment 21 is pivoted to armature lever 22 of a magnet 23, a spring 22' holding said armature and segment in their retracted positions. A. link 24 connects segment 21 to the type-segment 24' splined on said so as to permit vertical movement of normally holds said arm against stop 16.

Magnet 23 is included in a circuit 25 which is energized through relay 7 by a positive impulse over the line circuit. When magnet 23 is energized the toothed-segment 21 will be moved forward into engagement with pinion 20 and, as the latter is continuously rotated, segment 21 will be rotated about its ivotal connection with armature 22 there y moving link 24 and arm 24' to rotate the type-segment, the are through which the segment is moved depending upon the duration of the impulse. Also included in circuit 25 is a magnet 26 having a holding winding 26, and this magnet is also energized by a positive impulse through the line relay at the same time that magnet 23 is energized. The function of ma et 26 is to lock the type-segment in the posi ion to which it is moved by magnet 23. This'is efiected by the latch armature 26' enga ing the teeth of the rack 21 on the side 0 segment 21. As segment 21 and the latch 26*- move forward simultaneously and at the same rate, there will be no engagement of the latch and rack until magnet 23 is denergized and the spring 22' retracts as V cut 21, or, in other words, the holdi winding 26 maintains the engaging en of the latch in its forward position so that the rack.21 will be brought into engagement therewith when segment 21 is retracted.

If the selected character is on the top row of the type-segment no other movement of said segment is necessary except that reuired for printing the selected character. hould, however, the selected character he on any other horizontal row it is necessaryto give the type-segment a longitudinal movement to properly position it for printmg. This longitudinal movement is effected throu h a toothed-segment 27 adapted to be broug t mto engagement with a continuously rotating pinion 28 on shaft 17. Segment 2? is pivotally connected to armature lever .29 of a magnet 30. The latter is in cluded in a circuit 25, which circuit also includes a contact 31' closed by the movement of armature 22 when magnet 23 is deenergized, such movement of armature 22 openlng contact 31 in circuit 25, thereby shifting the circuit, which is energized by a positive impulse through the line relay, from circuit 25 to circuit 25. When magnet 30 is thus energized segment 27 will be moved forward into engagement with pinion 28, and the type-segment shaft will be moved longitudinally throu h a link 32 connecting said segment wit said shaft. By connecting the arm 24' through a spline with the type-segment shaft, the longitudinal movement of said shaft is not interfered with. The extent to which the type-segment will be moved by segment 27 depends upon the duration of the impulse. In order to lock the type-segment in the position to which it is moved by segment 27 I rovide a magnet 33, having a holding winding 33', included in circuit 25'. When magnet 33 is energized the latch-end of armature 34, normally retracted by a sprin 34, will move forward with segment 27. en magnet 30 is deiinergized and segment 27 retracted by spring 29', the teeth of a rack 27, on said segment, will engage the end of armature 34 which is held in its forwardposition by the holding winding 33, whereby holding the type-segment in its ultimate printing position. The turns in the holding windmgs are only suflicient to hold armatures 26- and 34 in their attracted positions.

The printing magnet 35 is in a circuit 36 controlled by a local relay 37 which latter is energized only when the line relay 7 is energized by a negative impulse to close contact 9. he printing magnet is shown as energized through the closing of contact 38. The magnet 35 is in the form of a solenoid, the plunger 35' of which is. moved forward when the coil is energized. The plunger is connected by a link 39 to a hammer in the form of a pivoted arm 40 having a toothed section 41 adapted to engage the toothed side 11 of segment 11. During the selecting period, the hammer 40 occupies such position that its teeth clear the toothed portion of the type-segment 11 when the selector magnets 23 and 30 are energized; that is, the type-segment 11 must always be free to be moved to properly position the selected character except during the printing period.

When a positive impulse is on the line circuit, relay 37 and printing magnet 35 are deenergized; contact 38 is open, and contact 42, in a local circuit 43 which includes the holding coils 26 and 33, is closed. The righthand end of plunger 35 carries collars 44, and when magnet 35 is deiinergized a contact 45 which is in a circuit bridging contact 42, is closed, but contact 46 in a circuit bridging contact 38, is held open by a spring 47 holding the light armature lever 48 in its retracted position, said armature 48 being attracted by the pole pieces of the solenoid when the latter is energized. The function of contact 45 is to maintain circuit 43 and the holding coils 26' and 33' energized until the hammer 40 engages the toothed face of type-segment 11. The function of contact 46 is to maintain the circuit of printing magnet. 371 closed until plunger 35 has moved its full distance forward. lontnct 46 is closed by the movement of the light armature 48 when the coil of solenoid 35 is energized. When solenoid 35 is energized, the light armature 48 will move faster than the movement of plunger 35'. When plunger 35' is moved forward, the collars 44 will open contacts 45 and 46, and said contacts will remain open during the duration of the negative impulse.

The space magnet 49 is in circuit with printing solenoid 35 and is energized to space between letters. The carriage-return magnet 50 is in local circuit 51 which circuit includes a stop contact 52 adapted to be engaged by a finger 53 fast on the type-segment shaft. Line-feed magnet 54 is in a local circuit 55 which circuit includes a stopcontact 56 adapted to be engaged by finger 53 when the type-segment shaft is moved to position said finger directly opposite the stop. Below the contact stops 52 and 56 is a stop 57 the purpose of which is to prevent the type-segment striking the paper when a space impulse is received. The circuit A through relay 37 is opened, and its armature retracted, the moment the armature of line relay 7 o ens the negative contact 9. This release 0 the armature of relay 37 opens contact 88, thus'deenergizing the printing solenoid 35.

The mode of operation of the described apparatus is as follows: In standard Wheatstone perforate tape the center or feedholes a are sp ced one-tenth of an inch apart; the upper holes 5 are the marking holes and transmit positive impulses; the lower holes a are the spacing holes and transmit negative impulses; and the contactmaker of the transmitter, during the operation of the transmitter, remains in the position last placed so that a current of one or the other polarity will always be on the line. For the purpose of transmitting impulses for the operation of the present apparatus I employ these well-known features of the Wheatstone transmitter, adopting any prearranged system of perforations to select the ultimate printing position of the typesegment, and usethe perforations on one side of the center to transmit positive impulses for energizing the selector magnets 23 and 30, and the perforations on the other side of the center to transmit negative impulses to ener 'ze the printing magnet, and to shift the so ecting circuit. The selecting and printing holes are so arranged as to send impulses of varying lengths.

The feed holes a are spaced a uniform distance apart, and in practice this is usually one-tenth of an inch. If the selecting and printing holes are eaclrmade every one tenth of an inch, then a positive and a negative impulse. that is, a complete reversal, will be transmitted with one-tenth of an inch travel of the tape, and as in Wheatstone transmission practice one-tenth inch of the travel of the tape or one complete reversal is taken as one unit, and one of the impulses of the reversal for one-tenth inch travel of the tape is taken as a one-half unit. The speed of the constantly rotating wheels 20 and 28 is so adjusted that the type-segment will be rotated, or moved longitudinally, at the same relative speed as that of the tape by the transmitter; that is, for every onetenth inch travel of the tape the type segment will move the distance between two type-centers.

All of the type-characters, except those on a the first. horizontal row and the first vertical row, are selected by two movements of the type-segment which require two impulses of one unit duration or longer; the first impulse operating the horizontal selector mechanism and the second the longitudinal selector mechanism, the length of the im pulses determinin the distance of travel of the type-segment in either the horizontal or longitudinal direction, and, therefore, determining the printing position of the selected character. In the present machine the first horizontal row has a space of seven type, so that when the horizontal selector mechanism is operated a positive impulse of one unit duration will rotate the segment 11 to the first type from the space; a positive impulse of two units duration to the second type, and so on. When the vertical selector mechanism is operated a positive impulse of one unit duration will move segment 11 longitudinally from the top horizontal row to the next; a positive impulse of two units duration will move segment 11 longitudinally the distance between two horizontal rows, and so 9n. In the circuit arrangement shown, positive impulses operate the selector mechanisms. Negative impulses operate the printing magnet when of more than onehalf unit duration, and when of one-half unit duration operate the circuit changer which shifts the circuit from the horizontal selector to the longitudinal selector through the opening of contact 31 and closing of contact 31' when magnet 23 is deencrgized. Contacts 31 and 31' are fast on armature lever 26 but insulated therefrom, and move forward therewith and are held in their forward position by a holding winding 26. When armature 22 is retracted while the contacts are in their forward position, 31 will be opened and 31' closed. With this general statement I will now describe the operation by tracing the circuits for printing the word Sir.

There is normall a negative current on the line and relay 7 is normally energized. After the printing of each word a space impulse is transmitted which consists of a positiv e impulse of one-half unit duration this being indicated on the tape passing through the transmitter in the lower part of the figure, which may be traced as follows: Starting at the armature of polarized relay 7 a one-half unit contact is made on the positive side establishing a circuit through coil 26, contact '31, circuit 25, magnet 23,- and throu h the local battery B to armature of relay 7, thus energizing magnets 23 and 26 and moving forward segment 21 into enagement with wheel 20, and also carrying orward the latch end of armature lever 26'. The positive impulse of one-half ,unit duration will not hold the segment 21 in engagement with wheel 20 for a suflicient time to cause the segment to travel beyond the limit of the first V'notch 21 and, therefore, the type-shaft will not be rotated. When the type-shaft is in the normal or rest position, arm 53 thereon is opposite its fixed stop 57 so that the type-segment is prevented striking against the paper. When the positive space impulse comes in, the circuit through magnet-'37 is opened and the armature 37 released, thus opening contact 38 to denergize the printing magnet and momentarily closing contact 42 to energize the holding coils 26' and 33. The ositive spacing impulse is followed imme lately by a negative,

impulse establishing a circuit through relay 37 to close the printing and space magnet circuit 36. The parts are, therefore, shown in the drawing in the positions they occupy upon the coming in of a negative impulse following a positive spacing impulse between words;. The machine is then in position to select and print the letter S of the word Sir.

Any arrangement of the characters on the type-segment may be followed, but in the machine constructed by 'me the letter S is the first type in the second horizontal row from the top; the letter I'is in the third place in the top row; and the letter R is in the second place in the second horizontal row. In the normal position of the typesegment the characters in the first vertical row are positioned for printing by a longitudinal movement only. It 1s necessary, however, to transmit the first impulse, for any type in the first vertical row, but to make it of one-half unit duration so that no rotary movement will be imparted to the type-segment, merely to shift from the circult 25 to the vertical selector circuit 25'. The first positive impulse, therefore, for selectin the letter S is of one-half unit duration w ich will close relay contact 8, causing an impulse of one-half unit duration to pass through the coils of magnets 26 and 23, and to open the circuit of magnet 37 for an interval of one-half unit duration which will chuse the armature 37' to close contact 42 and thus close the holding circuit 43 through the windings 26' and 33 of magnets 26 and 33 respectively. Armature lever 34 of magnet 33 will not be attracted when the holdin coil 33' is energized as the latter contains but few turns, not sufficient to attract the armature but only sufficient to hold it in position after it has been attracted by current through coil 33. Armature 26 will remain attracted after the opening of the first positive impulse and during the following onehalf unit negative impulse. Armature 22 and segment 21 on magnet 23 will be released immediately upon the opening of the first positive impulse, thereby engaging the first V notch of se nent 21 with the latch end of lever 26. e sole purpose of the first gositive impulse in selecting a type in the out vertical row is, therefore, merely to bring segment 21 upon its return movement into engagement with the latch armature 26 to prevent rotary movement of the type-segment until the selected character is printed, and to shift the selector circult from circuit 25 to circuit 25' by opening contact 31 and closing contact 31' upon the return movement of armature lever 22. The next positive impulse for selectin the letter S is of one unit duration and w' pass through the coil 26, contact 31', circuit 25', to magnet 30, thereby causing segment 27 to engage toothed wheel 28. Since this second impulse is of one unit duration, that is, a distance of one-tenth of an inch on the tape, segment 27 will be held in engagement with wheel 28 until the former has traveled a distance of one V notch on the segment. When segment 27 is thus ro- 110 tated it will move the type-segment shaft, and the type-segment, lon 'tudinally a distance equal to the distance tween the typecenters of the first and second horizontal rows, thus moving the segment to bring the 115 letter S into printing position. Then the circuit on the positive side of relay 7 is opened by a negative impulse on the line and the ma et 30 denergized, causing segment 27 to recede from the wheel 28 and engage with the latch end of armature lever 34, which is held in its attracted position by the holding coil 33. This second posit1ve impulse is followed by a negative impulse of one unit duration to energize the 125 printing magnet. As this negative impulse energizes relay 37 thereby opening contact 42 which would result in deenergizing the holding coils 26' and 33', and as it is necessary that said coils shall remain energized 130 printin until the hammer 40 engages the toothed side of the-typeent 11, I provide contact 45 whic is c osed during the periods that printing magnet is denergized. The closing of contact 45, as before explained, maintains circuit 43 closed throlagh the holding windings of magnets 26 an 33. When the printing magnet 35 is thus energized by the negative impulse, plunger 35', is moved forward with suflicient force to engage and move the t se ment against the paper 10'. The 0 y coi s of theselector magnets which are ener 'zed during the period are the olding coils 26' and 33 and these coils are deenergized by the forward movement of plunger 35 opening contact 45. During the printing period as the main windin of magnets 23 and 26 are deenergized it is possible to so operate the machine that the first impulse for the next succeeding letter of a word may be received. This is also permitted by reason of the two-part construction of the type-segment shaft, for the reason that although the hammer 40 may be in engagement with the type-segment 11, thereby holding the typeent in its raised position, the lower part a 13 of the type-shaft may be moving toward ably its mt position; or, in other words, the part 13 of t e type-segment shaft is free to be moved by the en gement of segment 21 with wheel 20 whl e the previous character is being printed. In practice this will roboccur only when the machine is eing operated at high speed. U on the coming in of the next positive impu se for selecting the letter I, that is, which results in the opening of the negative contact 9, the printing magnet 35 and space magnet 49 are deenergized, the latter at such time effecting the movement of the aper to space between the two letters S and The letter I being in the first horizontal row and the t ird from the first vertical row, the type-segment requires only a rotary movement to properly osition it for rinting. But one selecting lmpulse, thereore, is required for positioning the letter I, or any other character zontal row, for printing. As shown on the tape, a positive impulse of two units duration is sent over the line which, when again tracing the circuits, will cause gear 20 to rotate segment 21 the distance required to rotate the type-segment 11. When magnet 23 is denergized on the opening of the positive impulse, segment 21 when retracted will belocked in position by latch 26 engaging the third V notch- 'n segment 21. This positive impulse of two units duration is followed by a negative impulse for printing.

The letter R is next to the letter S and is in the second horizontal row and the second vertical row and therefore requires two positive selecting impulses each of one unit in the first horiduration. The first of these impulses will energize magnet 23 to efiect the rotation of the type-segment one unit, and will energize magnet 26 to hold latch 26" in position to lock segment 21 in the second V notch. This positive impulse of one unit duration is followed ply a negative impulse of one-half unit. though a negative im ulse is on the line and relay 37 is energize thereby, the period of time that the negative impulse is on is not sufiicient to fully ener ize said relay and, therefore, armature 37 will not be attracted so as to close the printing circuit 36 through contact 38. This negative impulse of one-half unit is followed y a ositiveimpulse of one-half unit duration w ich will energize circuit 25 through contact 31' which was closed on the opening of the first positive impulse, thereby energizing magnet 33 to move the typeshaft and segment longitudinally one unit to position the segment for printing the letter R, and ener ing magnet 33 to lock the segment in its ast adjusted position. The second positive impulse is followed by a negative impulse to energize the printing circuit by closing con tact 38. A positive impulse of one-half unit duration is then transmitted to space the paper, this impulse being followed b a negative. If the printed word should be the end of a sentence or message the armature of relay 7 would remain a ainst contact 9 as shown in the drawing. f the printed word is followed by another word a positive impulse of one-half unit duration is transmitted but it does not effect any movement of the type-segment. but the space magnet 49 is energized on the opening of the positive impulse and the closing of the negative contact 9 so as to space the paper one unit.

If the character to be rinted is in the fifth horizontal row from t he top and in the sixth vertical row, it would be necessary to first send a positive impulse of six units duration followed by a negative impulse of one-half unit duration to shift the circuit from circuit 25 to circuit 25, this negative impulse being then followed by a positive impulse of five units duration to move the type-segment longitudinally from the first to the fifth horizontal row.

From the foregoin description the mode of operation required to position the typesegment for any character thereon except those in the first horizontal row is as follows: A negative impulse being on the line, a positive impulse of one unit duration or more is transmitted to rotate the type-segment, this impulse bein followed by a negative impulse of onealf unit duration 0 shift the circuit from circuit 25 to 25', th s short impulse being followed by a positive impulse of one unit duration or more to move the type-segment longitudinally, and finally a negative impulse of at least one unit duration to eflect the printing of the selected character. If the character is on the first horizontal row then but one positive impulse of ohe unit duration or more is re uired to position the type-segment. If the c aracter is in the filst vertical row, althou h two positive impulses are transmitted, t e first one is of only one-half unit duration so that when said impulse is opened by a negative impulse of one-half unit duration the selector circuit will be shifted from circuit 25 to circuit 25. The second positive impulse would be of one unit duration or more to move the segment longitudinally the required distance.

In the foregoing description I have used the term type segment as including a cyl-. inder or wheel with several rows of type ex tending part way or continuously around the surface of the cylinder or wheel, but, as before stated, the principle of my invention is applicable to a system in which the characters to be printed are arranged in a single row on the periphery of a wheel. Such system is shown in Fig. 2 in which the printing characters are arranged in a single line on the periphery of a wheel 58 fast to a collar 59, the latter being slidahly supported on a shaft 60. The means for moving the typewheel across the paper is not shown. .The shaft 60' is under constant stress and its rotation is controlled by an escapement 61 engaging the teeth of a ratchet wheel 62. The shaft 60 may be put under constant stress by any suitable mechanism. In the form illustrated I employ a pinion 63 which is continuously driven and which engages a gear 64, loose on a shaft 65. The gear 64 is recessed to receive a spring 66, one end of which is fast to the shaft 65, the other end,

being unattached and bearing loosely against the outer wall of the recess so that when the spring is completely wound the gear 64 rides over the end of the spring. On the shaft 65 is a car 67 meshin with a gear 68 loose on the aft 60, but a apted to rotate the shaft through a spring 69 anchored to both the gear and the shaft. When the escapement 61 is released the ratchet wheel 62 will be rotated by the unwinding of the spring 69.

As shown in Fig. 3 the ratchet wheel 62 has two sets of teeth 70 and 71, the former extending entirely across the face of the ratchet wheel and the latter extending substantially half the distance across the face.

In other words, the teeth on the ratchet wheel are divided into ups, in the' particular instance shown, eight ups of life teeth each, there being a too corresponding to each character on the type-wheel 58.

ormally the escapement 61 is in engagement with one of the long teeth 70, and if released when in such position the ratchet wheel will be step 7 forward a distance of five letters for ea tooth of the escapement.

the teeth of the 77, which action will v5,8 to rotate.

When it is desired to select a letterin one of the groups the ratchet wheel is shifted so that the escapelnent dogs, will engage the short teeth 71. The two rows of teeth on the ratchet wheel 62 perform the same functibns as the segment 21, magnets 23. and 26, and their respective armatures, segment 27, and magnets 30 and 31, and their respective armature, shown in Fig. 1, the first im'mlse controlling the teeth 70 and the secon impulse controlling the teeth 71. Instead of shifting the circuit from one set of selecting magnets to another, as described in connection with Fig. 1, the selecting action, in Fig.

i 2, is shifted mechanically by the action of a cam 72, the rotation of which is controlled by a slow-acting magnet 73, and a quick-actng magnet Tl. Normally a finger7 5, mounted upon and extending from the cam 72 rests on an extension of the armature, 74 of magnet 74 and prevents its rotation. The armature 73, of the slow acting magnet 73, is mounted on a stationary support. The hub of the ratchet wheel 62 has an extension 62' against the side of the cam 72 by a spring 76. The magnets 73 and 74 are normally energized.

In place of the ratchet wheels20 and 28, descri ed in connection with Fi 1 as retatmg at a speed proportional to t e speed of the perforated paper 3, I provide a vibrator 7 which is adjusted to oscillate at a speed 111 proportion to the travel of the tape 3; that is, it is so adj usted that for each urlit in the code the vibrator will make one complete oscillation. The vibrator 77 carr1es a contact which is in circuit with the magnet 78 operating the escapement, and, as esca ement correspond in arrangement and num r with the letters on the type-wheel, each oscillation of the vi brator will cause the type-wheel to advance one letter space. A magnet 80, in circuit with the positive contact of relay 7, con: trols the action of the vibrator 77 and controls the mechanism in a manner similar to the magnets 23 and 30 of Fig. 1. When, for instance, magnet 23, which is in circuit with the positive contact of rela 7, is energized, the segment 21 will be rought to bear against the pinion 20 and, through a conmotion to the type-wheel shaft, will cause the type-segment to be rotated. In 7 the mechanism shown in Fig. 2, when the relay 7 closes on the positive side, ma et 80 will be energized and the vibrator 7 released. The circuit of magnet 78 will be opened and closed for each oscillation of the vibrator allow the type-wheel As described in Fig. 1, the selecting actionis shifted from one set of magnets to another by manipulating the contacts 31 and 31'. The armature 26' carryi these contacts is held attracted by a holding coil 26.

no I

This holding coil is in circuit with a contact 42 controlled by a. slow-acting magnet 37 which is adjusted so'that the armature will not be released during an interval of one-half unit duration. In the system shown in Fig. 2, the selecting action is controlled by the cam 72, the position of which is controlled by a slow-acting magnet 73 and a quick-acting magnet 74, both of which are in circuit with the negative side of the relay 7. As previously stated, the shaft is under constant stress and is held from rotating by the finger 75 hearing against the extension of armature 74. When a letter is to be selected the armature of relay 7 closes on the positive side and magnet 80 will be energized and the vibrator 77 released, while the circuit on the negative side of relay 7 will be opened and the armaturelsTl" and 73' will be released. The armatue 74 will disengage from the finger 75 to allow the cam to turn until the pro jeetion 81 strikes on the extension of armature 74'. In this position of the cam, the extension 62 from the hub of the ratchet wheel 62 will still rest on the face of the cam, but will be just back of the recessed portion 82. If the letter to be selected is in a position corres onding to one of the short teeth of the rate et wheel a second selecting impulse will follow the first after a negative impulse of one-half unit duration. This short negative impulse will operate to close the relay on the negative side for a short interval, thereby energizing magnets 73 and 74. Magnet 73 being slow-acting will not attract its armature with this short impulse. Magnet 74 will, however, attract its armature and withdraw the extension 74 from the projection 81 and release the cam which will turn until the face of the cam 83 strikes on the extension of the armature 73'. This motion will bring the cam 72 in a position to allow the extension 62 from the hub of the ratchet wheel 62 to drop into the recessed portion 82. This lateral motion of the ratchet wheel 62 will bring the short teeth into engagement with the escapement 61. When the armature of relay 7 again closes on the positive side, the magnets 80 and 78 will be energized, as before described, and allow the wheel to turn to p the selected position. When the armature of relay 7 again closes on the negative side, for the printing of a letter, the impulse will be at least of one unit duration which will energize both the magnets 73 and 74, and the extension of armature 73 will be released from the face of the cam 83. A printing cam 84 is fastened to the shaft 65 and controls the action of a printing ham mer 85.

The relation of the recessed portion of cam 84 and the ledge 82 of the cam 72 is such that the printing hammer will be released and the printing completed before the projection 62' from the hub of the ratchet wheel 62 leaves the ledge 82. -When the projection 62' passes off the ledge 82 during the rotation of the cam 72, the ratchet 62 will be permitted to pass entirely out of the path of the escapement 61. A tooth 87. shown more clearly in Fig. 3, corresponding to the zero position of the typewheel extends beyond the face of the ratchet and when the ratchet wheel is released the type-wheel shaft to which it is comiectcd will be turned by the spring 69 until the tooth 87, in the zero position. strikes against the escapement 61. During the further rotation of the cam 72 the inclined surface 86 will strike the projection 62' and restore the ratchet wheel to its starting position, and finally the finger 7 5 will stop against the projection 7 4', leaving the mechanism in position to select the next letter. In practice the cam shaft 65 travels at a slower speed than the type-wheel shaft when it is released for bringing the type-wheel to the zero position.

The mode of operation of the system of Fig. 1 has been Set forth in such detail by me that I do not deem it necessary to set forth the specific mode of operation of the system of Fig. 2 other than as given above. While I prefer to operate my system with minus and plus currents through a polar relay, it is obvious that a make-and-break current may be employed without departing from the spirit of the invention.

What I claim and desire to secure by Letters Patent of the United States is 1. Atelegraph typewriter system comprising a plurality of selectors including magnets and circuits therefor, means for operating one of said selectors by an impulse of one or more units duration to select a given grou of characters, means for shifting to anot er selector after the first selector has been operated, and means for operating the selector to which the shift has been made by an impulse of one or more units duration to select a character from said group.

2. Atelegraph t pewriter system comprising a plurality o selectors including magnets and circuits therefor, means for operating one of said selectors by an impulse of one or more units duration to select a given group of characters, means for locking the selector after it has been operated and for shifting to another selector, and meansfor operating the selector to which the shift has been made by an impulse of one or more units duration to select a character from said group. I

3. Atelegraph typewriter system comprising a type-carrier, a selector mechanism including magnets and circuits therefor, and means to move the ty e-carrier to different desired positions by impulses of predetermined and correspondingly different duration varying according to the location of the character on the carrier.

. 4. A telegraph typewriter system comprising a type-carrier, a selector mechanism including magnets and circuits therefor, means to move the type-carrier to a desired position by a single impulse of predetermined duration varying according to the location of the character on the carrier, and means to move the type-carrier to another desired position by a single impulse of predetermined duratlon varying according to the location of the character on the carrier.

5. A telegraph typewriter system comprising a type-carrier having printing characters :u-ranged thereon in groups, and means for selecting desired groups by impulses of predetermined and correspondingly different duration varying according to the location of the group on the carrier.

6. A telegraph typewriter system comprising a type-carrier having printing characters arranged thereon in groups, means for selecting a desired group by a single impulse of predetermined duration varying according to the location of the group on the carrier, and means for selecting a de sired character in the selected group by a single impulse of predetermined duration varying according to the location of the character in the group.

7. A telegraph typewriter system comprising a type-carrier, a selector mechanism including magnets and circuits therefor, means to move the type-carrier to a desired position by a single impulseof predetermined duration varying according to the location of the character on the carrier, means for holding the type-carrier in its selected position and for shifting to another selector, and means for operating the latter by a single impulse of predetermined duration varying according to the location of the character on the carrier.

8. A telegraph typewriter system comprising a type-carrier, a selector system including magnets and cincuits therefor, means for operating a selector by an impulse of one or more units duration to move the typecarrier to a desired position, means for shifting to another selector by an interval of less than one unit duration, and means for moving the type-carrier to another position by an impulse of one or more units duration varying according to the location of the character on the carrier.

9. A telegraph typewriter system comprising a type-carrier, a selector system including magnets and circuits therefor, means for operating a selector by an impulse of one or more units duration to move the typecarrier to a desired position, means for holding the type-carrier in the position to which it has been moved, means for shifting to another selector by an interval of less than one unit duration, and means for moving the type-carrier to another position by an impulse of one or more units duration varying according to the location of the character on the carrier.

10. A telegraph typewriter system comprising a type-carrier, a selector mechanism including magnets and circuits therefor, means for operating said mechanism b impulses of one or more units of pre etermined and different duration to move the type carrier to different desired positions, and means for printing the character by an impulse of one or more units duration of opposite polarity.

11. A telegraph typewriter system comprising a type-carrier, a selector system in cluding magnets and circuits therefor, means for operating a selector by an impulse of one or more units duration to move the type-carrier to a desired position, means for shifting to another selector by an in terval of less than one unit duration, means for moving the type-carrier to another position by an impulse of one or more units duration varying according to the location of the character on the carrier, and means for printing the character by an impulse of one or more units duration of opposite polarity.

12. A telegraph typewriter system comprising a type-carrier, a selector mechanism including magnets and circuits therefor, means to move the type-carrier to a desired position by a single impulse of predetermined duration varying according to the location of the character on the carrier, means for shifting to another selector mechanism by an impulse of constant duration, and means to move the type-carrier to another desired position by a single of predetermined duration varying according to the location of the character on the carrier. V

13. A telegraph typewriter system comprising a type-carrier, a selector mechanism including magnets and circuits therefor, means to move the type-carrier to a. desired position by a single impulse of predetermined duration varying according to the 10- cation of the character on the carrier, means for shifting to another selector mechanism by an impulse of constant duration but of opposite polarity, and means to move the type-carrier to another desired position by a single impulse of predetermined duration varying according to the location of the character on the carrier.

14. A telegraph typewriter system comprising a type segment having the characters thereon arranged in a plurality of rows, a selector mechanism including magnets and circuits therefor, means to rotate the type segment to any desired position by a single impulse of predetermined duration varying according to the location of the character on the segment, and means to move the type segment longitudinally 'to any desired position by a single impulse of predetermined duration varying according to the location of the character on the segment.

15. A telegraph typewriter system comprising a type segment having the charactersthereon arranged in a lurality of rows a selector mechanism inclu ing magnets and circuits therefor, means to rotate the type segment to any desired position by a single impulse of predetermined duration varying according to the location of the character on the segment, means to shift the selector circuit by an impulse of constant duration, and means to move the type segment longitudinally to any desired position by a single impulse of predetermined duration varying according to the location of the character on the segment and of the same polarity as the first impulse.

16. A telegraph typewriter system comprising a type segment having the characters thereon arranged in a plurality of rows, a selector mechanism including magnets and circuits therefor, means to rotate the type segment to any desired position by a slngle Impulse of predetermined duration varying according to the location of the character on the segment, means to shift the selector circuit by an impulse of constant duration but of opposite polarity, and means to move the type segment longitudinally to any desired position by a single impulse of predetermined duration varying according to the location of the character on the segment and of the same polarity as the first impulse.

17. A telegraph typewriter system comprising a type se ent havin the characters thereon arrange ,7 in a lura ity of rows, a. selector mechanism inc uding magnets and circuits therefor, means to rotate the type segment to any desired position by asingle impulse, and means to move the type segment lon 'tudinally to any desired position by a sing e impulse, said means including a constantly acting source of power norma ly out of engagement with the type segment.

18. A telegraph typewriter system comprising a type segment having the characters thereon arranged in a plurality of rows, a selector mechanism including magnets and circuits therefor, means to rotate the type segment to any desired position by a single impulse, means to move the typesegment longitudinally to any desired position by a single impulse, said means includm a constant y acting source of power normally out of engagement with the type segment,

prising a type se and means for varying the duration of the impulses according to the character to be printed. v j

19. A telegraph typewriter system comprising a type se ent havin the characters thereon arran in a plura ity of horizontal rows, a se ector mechanism including a magnet and a circuit therefor, and means to rotate the type segment to fix the vertical position of the selected character by a single impulse of predetermined duration varying according to the location of the character on the segment, said means including'f a constantly acting source of power normally out of engagement with the type segment.

20. A telegraph typewriter system coment havin the characters thereon arran in'a plura ity of horizon tal rows, a se ector mechanism including a magnet and a circuit therefor; and means to move said type segment lon 'tuiiinally to fix the horizontal positiono the selected character by a single impulse of predetermined duration varying according to the location of the character on the segment.

21. A telegraph typewriter system comprising a type segment, a continuously rotatin source of power mechanism normally out o engagement with the source of power, means including a selector magnet for moving said mechanism into engagement with the source ofpower to position the type segment, the period of such en a ement depending upon the duration 0 t e impulse which energizes said magnet and means for locking the type segment in its adjusted position.

22. A telegraph typewriter system-comprising a type segment, a driving wheel and means for continuously rotating the same,

a driven segment and connections therefrom to thetype segment, a selector magnet and an armature therefor, said driven member beingalso connected to said armature, and means for energizin said magnet by an impulse of given polarity to thereby move said driving and driven members into engagement with each other, the duration of the impulse determining the period of such engagement and the position of the type segment.

23. A telegraph typewriter system comprising a type segment, a driving wheel and means for continuously rotating the same, a driven segment and connections therefrom to the type segment, a'selector magnet and an armature therefor, said driven member being also connected to said armature, means for ener 'zing said ma et by an impulse of given po arity to there y move said driv ng and driven members into en agement wit each other, the duration of t e lmpulse determining the period of such engagement and the position of the type segment, a locking magnet and an armature therefor, and meanson said driven member-to enga the armature of the locking magnet until the selected character is printed. V 24. Atelegraph typewriter stem comprising a type segment, a driving w 7 col and means for continuously rotating the same, a toothed segment adapted to he moved into engagement with said wheel a connection from said toothedsegment to the segment, a selector magnet andan arma ure therefor, said toothed segment being pivoted on said armature, and means for energizing said magnet to move said toothed segment and driving wheel into engagement with each other and to hold them in engagement ing the duration of the energizmg impulse.

25. A telegraph typewriter system comprising a type segment, a. driving wheel and means for continuously rotating the same, a toothed segment adapted to he moved into engagement wtih the said wheel, a. connection from said toothed segment to the type 7 segment, a selector magnet and an armature therefor, said toothed segment being pivoted on said armature, means for energizing said magnet to move said toothed segment and said wheel into enga ment with each other, a locking magnet an an armature therefor, and a notched surface on said toothed segment adapted to engage the free end of the armature onsaid lock ng magnet when the toothed segment ,is retracted.

26. A telegraph typewriter system comprising a type segment, a continuously rotating source of power, independent mechanisms normally out of engagement with the source of, powiwand means including two selector mahet ihnd circuits therefor for moving midmechanism successively into engagement with the source of power to ampart two successive movements to the type segment, the periods of 'gement depending upon the duration of t e impulses which energize said magnets.

27. A telegraph typewriter system comprising a type segment, a continuously rotating source of power, independent mechanisms normally out of engagement with the source of power, means including two magnets and circuits therefor for moving said durmechanisms successively 'into engagement with the source of power to impart two mic: cessive movements to the 1:37 e segment, and means for shifting the circuit from the first to the second oisaid magnets when the first magnet is-dener p A telegra'p typewriter system coma type segment, a continuously rotating source of power, independent mechanisms normally out at engagement with the source of power, m y including two selector magnets and one "ts therefor for moving said mechanisms into engagement with the source of power to impart two successive movements to the type se ent, means for energizing said ma nets y successive impulses of a given p0 arity and means actuated u on t e breaking oi the first impulse to shi the selector circuit from the first of said magnets to the second.

@9. A telegraph typewriter system comprising a type segment, a constantly acting source of power adapted to move said segment, selector magnets and circuits therefor, means actuated by said magnets when energized to bring the segment into engagement with the source of power, to position the type segment for printing, a printing magnet and a circuit therefor, means for transmitting impulses of a given polarity to energize the selector magnets, and impulses of opposite polarity to energize the printing gnet.

A telegraph typewriter system comprising a type segment, selector magnets and circuits therefor, means actuated by said magnets when energized to position the type segment for printing, and means for energizing said magnets successively including a contact in the circuit of the second selector magnet, the armature of the first magnet closing said contact when the circuit of the first selector magnet is deiner zed.

In testimony whereof I ave hereunto signed my name in the presence of two subscribing witnesses.

EDWARD E. KLEINSCHMIDT.

' Witnesses:

M. E. McNmcrr, CHARLES S. Jones. 

